Watch-key



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' Watch Key,

No. 236,984. Patehte'dlan. 25.l8 8l.

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UNITED STATES PATENT OFFICE.

ALLISON N. CLARK, OF PLAIN'VILLE, CONNECTICUT.

WATCH-KEY.

SPECIFICATION forming part of Letters Patent No. 236,984, dated January 25, 1881, Application filed October 28, 1880. (No model.)

To all whom it may concern:

Be it known that I, ALLISON N. CLARK, of Plainville, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Watch-Keys, of which the following is a specification.

My .invention relates to improvements in watch-keys in which the flatted handle is formed solid in one and the same piece with the solid key-pipe and from a round wire blank; and the objects of my improvement are to cheapen the manufacture and to make the key both lighter and stronger.

My key and the several stages of its manw facture are illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of the key-pipe and the first blank for the handle portion of the -key. Fig. 2 is a side elevation showing the second blank. Fig.3 is an edge View of the same. Fig. 4 is a side elevation, showing the third blank. Fig. 5 is a like view, showing the handle finished ready to polish; and Fig. 6 is a like view of the finished key.

The key-pipe, from the swivel-groove a down to the lower end, is of the ordinary form of solid key-pipes, and may be made in the ordinary manner. I prefer to first cut the wire into proper lengths for one key, and then form the pipe thereon, leaving the round wire blank A on the handle end, as shown in Fig. 2 but the handle end of the key may be made before the pipe is finished, if desired. Again, the wire might be cut intolengths long enough for two keys, and then, after forming the pipes, cut them in two in the middle, which will produce two blanks like Fig. 1. This first blank A is then operated upon by means of rolls or swaging-dies to flatten the wire and broaden 0 it into the second handleblank, B, as shown in Figs. 2 and 3. These dies or rolls should be so shaped as to gradually reduce the blank in thickness and leave a neat, smooth, and tasty form at the junction of the round and flatted portions, as shown. The blank B is next placed in a trimming-die to trim the edges into any desired form for the handle and change the irregular-shaped blank B into the third blank, 0, as shown in Fig. 4. This blank 0 is then operated upon by a die and punch to remove the middle portion and form the handle into what may be termed a ring, or the finished handle D, as shown in Figs. 5 and 6.

The opening in the handle D may be of any desired form.

If desired, the middle portion of the handle might be cut out and the handle trimmed at one and the same operation, instead of two. When thus trimmed and punched it is ready to be polished and for the attachment of the chain-ring b in any ordinary manner.

By forming the flatted handle from a piece of round wire and in one straight piece with the pipe, as hereinbefore described, I very much cheapen the manufacture of the key, and I also produce a very neat and attractive key, and one in which it is impossible for the handle ever to become loose or detached.

I claim as my invention The herein-described watch-key, consisting of the solid key-pipe and the solid flatted handle D, gradually tapering in thickness from the body of said pipe, and all in one and the same undivided piece, substantially as described, and for the purpose specified.

ALLISON N. CLARK.

Witnesses J AMES SHEPARD, JOHN EDWARDS, Jr. 

